I have actually never used Thought Control so I don't know how well this would work. Also not sure if I should cap it at 75 or keep boosting it. This is not for dominating.
I'd push it a little higher, if I were you. Even on Hard, if your effective skill is under 200, you'll occasionally see some resists. With a full psi build, you can stop at 75 because your psi beetle armor and uni-psi headband will get you well over 200 effective, but I can't see that build wearing a psi beetle tac vest.
You are significantly over-invested in Stealth, and a little over-invested in Lockpicking. If you wanted, you could free up some points from there and add a dozen or so to TC to get you comfortably over 200. If you plan on relying on TC to get you out of a pinch, you don't want to risk resists any more than you absolutely have to. Then you could put all the points you have left into Chemistry and try to get to a buffed 69 effective so you can make some grenades and nice specialty ammo for your sniper rifle. W2C is good enough, but there are some situations where the specialty ammo is even better. Always nice to have a few rounds with you, just in case.
Something more like this would be a little tighter a build, though it would require you to buff up to hit your highest skill checks:
http://underrail.info/build/?HgUDBwMMCgbCoAAAAAAAwoxTWAAAZ2cqJ2d4LTJGOQBNATkoHTUnM35LwoUxGSQrIcKHwrXCpOKcmgXip74K378edit: build link modified for new Character Builder URL